Unwanted Rank Order line deletion in Bank Determination in FBZP u0096 APP

One more line item is being added and asking for a Rank Order (Mandatory Field) in Bank Determination (T/Code - FBZP - APP).

Inspite of deleting the Payment methods / Rank Orders lines & after generating the Request (For the deletion of unwanted data), system is still adding one more line with data in all other fields except Rank Order field (Mandatory field) when we go back to fbzp again.

Pls. help us by providing us the solution on the same.

Regards,

Srilakshmi